Screw lock assembly



FIG. 1 is a perspective view of the screw lock assembly including a screw and cup washer (bracketed in drawing) utilizing the new design of my invention;

FIG. 2 is a side view of the screw lock assembly with the _cup washer properly positioned for use;

FIG. 3 is a top view of the screw lock assembly taken from a direction looking in from the left _of FIG. 2; and

FIG. 4 is a bottom view of the screw lock assembly taken looking in the direction to the right in FIG. 2. 

The ornamental design for a screw lock assembly, as shown and described. 